JP2002281526A - Image generator, program and information storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image generator, a program and an information storage medium, by which an observer can obtain stereoscopic vision even when a screen is rotated around an axis vertical to the screen. SOLUTION: The image generator displays an image L for left eye and an image R for right eye on a display part. The image L for left eye is visible only for a left eye EL of the observer of a screen 40 and the image R for right eye is visible only for a right eye ER of the observer of the screen 40. When the screen 40 is rotated around a (z) axis, a stereoscopic image control part deviates at least one of images L and R for left eye and right eye in the direction of (y) axis of the screen corresponding to the rotating angle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an image generating apparatus, a program, and an information storage medium suitable for displaying a stereoscopic image.

[0002]

2. Description of the Related Art In recent years, stereoscopic images are sometimes used in the fields of image generation apparatuses (for example, game apparatuses) and movies in order to create a more realistic atmosphere. The stereoscopic image prepares images for the left eye and the right eye for the left and right eyes of a viewer (for example, a player in the case of a game device), and is at the point of gaze of the viewer based on the parallax of these images. Gives an object a three-dimensional effect.

Various methods for generating such a stereoscopic image have been proposed. In principle, a left-eye image and a right-eye image having parallax in the left and right directions, ie, the direction in which the viewer's eyes are arranged, are used. It is realized by providing at the same time.

[0004] Recent advances in semiconductor technology, packaging technology, and the like have led to a reduction in the weight and portability of electronic devices, and have led to the development of mobile phones, portable game machines, PDAs (Personal Digital Assistants).
tant) is a liquid crystal display (Liquid
Crystal Display: Abbreviated as LCD below. ) Is adopted, and the above-described stereoscopic image can be displayed.

[0005] However, for example, in the case of a portable electronic device, when a screen on which a stereoscopic image is displayed is rotated around an axis perpendicular to the screen, the line of sight of the left eye viewing the left-eye image changes. The line of sight of the right eye viewing the image for the right eye does not cross, and stereoscopic viewing becomes impossible.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object the object of the present invention even when the screen rotates around an axis perpendicular to the screen. An object of the present invention is to provide a stereoscopic image generation device, a program, and an information storage medium.

[0007]

According to one aspect of the present invention, there is provided an image generating apparatus for generating an image.
Display means for displaying a stereoscopic image by left and right parallax formed based on the image for the left eye and the image for the right eye, and when a direction perpendicular to the screen of the display means is the first axis,
Angle acquisition means for acquiring a rotation angle of the screen about a first axis, and displaying on the screen at least one of the left-eye image and the right-eye image in accordance with the acquired rotation angle Image adjusting means for shifting the position in the vertical direction.

[0008] A program according to the present invention is a program usable (executable) by a computer (a program embodied in an information storage medium or a carrier wave), wherein the means is realized by a computer. .

That is, a program which can be used by a computer, and is a direction perpendicular to the screen of a display means for displaying a stereoscopic image by a left-right parallax formed based on the left-eye image and the right-eye image. Is the first axis, an angle acquisition unit that acquires a rotation angle of the screen about the first axis, and an image of the left-eye image and the right-eye image according to the acquired rotation angle. An image adjusting means for shifting at least one of the display positions on the screen in the vertical direction is realized by a computer.

[0010] An information storage medium according to the present invention is an information storage medium usable (executable) by a computer, and includes a program for causing a computer to realize the above means.

Here, a stereoscopic image means an image which gives a three-dimensional effect to an object of interest of a viewer of the display means. Note that the stereoscopic image to be displayed may be an object image generated in an object space that is a three-dimensional space, or may be a pseudo two-dimensional image imitating a three-dimensional image.

The screen of the display means the display screen of the above-mentioned stereoscopic image.

Further, the left and right parallax refers to the parallax in the direction in which the viewer's eyes are arranged. Here, the parallax refers to a difference in the direction of the line of sight with respect to the same object.

Further, the angle obtaining means obtains the rotation angle about the first axis in a direction perpendicular to the screen of the display means, regardless of software or hardware. As such an angle acquisition unit, for example, an angular velocity acquisition unit as hardware such as a gyro sensor may be used to acquire an angular velocity, and this may be integrated by software to acquire a rotation angle.

[0015] In the present invention, a stereoscopic image forming a left-right parallax is displayed based on an image for the left eye that can be seen only by the left eye of the viewer and an image for the right eye that can be seen only by the right eye of the viewer. In this case, a direction perpendicular to the screen of the display means for displaying the stereoscopic image is set as a first axis, and a rotation angle around the first axis is obtained. Then, according to the rotation angle obtained by the image adjustment unit, the display position on the screen of at least one of the left-eye image and the right-eye image constituting the stereoscopic image is shifted in the vertical direction of the screen. Stagger. Thereby, it is possible to make an adjustment so that the line of sight of the left eye that sees only the image for the left eye and the line of sight of the right eye that sees only the image for the right eye cross.

Therefore, even when the screen is rotated around the first axis, the viewer can perform stereoscopic viewing with the adjusted left-eye image and right-eye image.

Further, in the image generating apparatus, the program and the information storage medium according to the present invention, the image adjusting means may be arranged such that the image for the left eye and the image for the right eye on the screen according to the acquired rotation angle. The display position of at least one of the left-eye image and the right-eye image on the screen is shifted such that the arrangement of the display positions is parallel to the arrangement direction of the viewer's eyes. .

According to the present invention, when the screen of interest to the viewer rotates around the first axis, the left-eye image and the right-eye image on the screen are independent of the positional relationship between the screen and the viewer. Since the display position of at least one of the left-eye image and the right-eye image is shifted so that the arrangement of the display positions of the images for use is parallel to the direction in which the eyes of the viewer are aligned, the left The state in which the line of sight of the left eye of the viewer viewing the image for the eye and the line of sight of the right eye of the viewer watching the image for the right eye can always be maintained, and the state in which stereoscopic viewing is possible can be continued. .

Further, the image generating apparatus, the program and the information storage medium according to the present invention provide the image generating apparatus,
Virtual camera setting means for setting a viewpoint of the left-eye and right-eye virtual cameras in the object space; and a left-eye image and a right-eye image using the left-eye and right-eye virtual cameras as viewpoints. Generating means.

Here, the object space refers to a virtual three-dimensional space in which an object whose shape is specified by, for example, defined points (vertices of a polygon or control points of a free-form surface) is arranged.

The virtual camera means a viewpoint in the object space described above.

According to the present invention, so-called three-dimensional image generation processing for generating an object image in an object space by real-time processing is applied, so that an image from a viewpoint set based on a screen rotation angle is used. Need not be prepared in advance, the change of the screen can be smoothly expressed, and the variation of the change can be diversified.

The present invention is also an image generating apparatus for generating an image, comprising: display means for displaying a stereoscopic image by a left-right parallax formed based on a left-eye image and a right-eye image; Angle obtaining means for obtaining a rotation angle about the first axis when a direction perpendicular to the screen of the means is set as a first axis, and a left eye in an object space according to the obtained rotation angle. Virtual camera setting means for setting the viewpoint of the virtual camera for the right and right eyes, and means for generating an image for the left eye and an image for the right eye from the viewpoint of the left and right virtual cameras. The virtual camera setting means includes, in accordance with the acquired rotation angle, the viewpoints of the left-eye and right-eye virtual cameras in a coordinate system of each virtual camera associated with the first axis. It is characterized in that it is rotated around a coordinate axis.

A program according to the present invention is a program usable (executable) by a computer (a program embodied in an information storage medium or a carrier wave), and is characterized by causing a computer to realize the above means. .

That is, a program which can be used by a computer, and which is a direction perpendicular to the screen of a display means for displaying a stereoscopic image by a left-right parallax formed based on the left-eye image and the right-eye image. Is a first axis, an angle obtaining unit that obtains a rotation angle around the first axis, and a virtual camera for the left eye and a virtual camera for the right eye in the object space according to the obtained rotation angle. Virtual camera setting means for setting a viewpoint, and means for generating a left-eye image and a right-eye image with respect to the left-eye and right-eye virtual cameras as viewpoints. Means for rotating the viewpoints of the left-eye and right-eye virtual cameras around a coordinate axis in a coordinate system of each virtual camera associated with the first axis according to the acquired rotation angle. Features That.

An information storage medium according to the present invention is an information storage medium that can be used (executed) by a computer, and includes a program for causing a computer to realize the above-described means.

According to the present invention, when the screen on which the stereoscopic image is displayed is rotated around the first axis, the left-eye and right-eye virtual cameras are acquired in each virtual camera coordinate system. Since the image is rotated according to the rotation angle, the image for the left eye and the image for the right eye displayed on the screen can be fixed to the viewer, and the left eye of the viewer who sees the image for the left eye And the line of sight of the right eye of the viewer who sees the image for the right eye intersects, and stereoscopic vision becomes possible. In this case, for example, even if the housing of the game device is tilted and operated by the force of the finger operated by the player of the game device, if a position where stereoscopic viewing is possible is set in advance, the operation situation may be reduced. Even if the screen is tilted accordingly, a state in which stereoscopic viewing is possible can be maintained.

Further, in the image generating apparatus, the program and the information storage medium according to the present invention, the angle obtaining means may be configured to include the first
The rotation angle is obtained based on the rotation angular velocity detected by the angular velocity detecting means for detecting the rotation angular velocity about the axis.

According to the present invention, the rotation angle about the first axis is obtained by using an inexpensive and easily available gyro sensor as the angular velocity detecting means. Can be achieved.

Further, the image generating apparatus, the program and the information storage medium according to the present invention include means for bringing the obtained rotation angle closer to a given value with the passage of time (or make the computer realize this means, or (Including a program for causing a computer to realize the means).

According to the present invention, even if the detection accuracy of the gyro sensor which is inexpensive and easily available as the angular velocity detecting means is extremely low, the gyro sensor for the left eye can be used in accordance with the rotation angle about the first axis of the apparatus main body. It is possible to provide an image generating apparatus that displays a stereoscopic image so that the line of sight of the left eye of the viewer viewing the image and the line of sight of the right eye of the viewer watching the right-eye image intersect.
In this case, it is possible to achieve both display of a stereoscopic image full of a sense of reality and cost reduction.

[0032]

Preferred embodiments of the present invention will be described below with reference to the drawings.

1. Principle of stereoscopic vision An image generation device to which the present invention is applied prepares left and right eye images for the left and right eyes of a viewer (for example, a player in the case of a game device).

FIGS. 1A and 1B show an example of a stereoscopic image generated by the image generating apparatus.

Here, the horizontal direction of the screen 10 is the x-axis, the vertical direction is the y-axis, and the direction perpendicular to the screen 10 is the z-axis (x-axis and y-axis).
Axis perpendicular to the axis).

The image generating apparatus converts the image shown in FIG.
As shown in (A), a left-eye image L and a right-eye image R are displayed on the screen 10. In this case, the image L is for the left eye, has become visible only in the left eye E _L of the viewer of the screen 10, the right-eye image R is visible only to the right eye E _R of the viewer of the screen 10 It has become.

[0037] Accordingly, the stereoscopic image displayed on the screen 10, as shown in FIG. 1 (B), the line of sight connecting the left eye E _L and the left eye gaze point, the right eye E _R and Migimechu It is felt to be located at the intersection 12 with the line of sight connecting the viewpoint, and an image with a three-dimensional effect is observed.

By the way, in this state, the screen 10 is rotated around the z-axis.
Is rotated to a state as shown in FIGS. 2A and 2B.

The viewer's viewpoint is a screen displaying a stereoscopic image.
Is rotated around the z-axis, the equations (1) and (2) show
It is fixed at the coordinates. Here, as shown in FIG.
Eye E _LAnd right eye E_RIs D.

The position of the left eye E _L : (−D / 2,0, z0) (1) The position of the right eye E _R : (D / 2,0, z0) (2) This state When the image is rotated about the z-axis as shown in FIG. 2A, the image L for the left eye and the image R for the right eye are displayed on the screen 10 'with the rotation. In this case, as shown in FIG. 2 (B), the left-eye image L E _L and the left eye of the observer
And the line of sight connecting the viewer's right eye E _R and the right eye image R no longer have an intersection, and have a twisted relationship with each other. Therefore, it is difficult or impossible for a viewer to perform stereoscopic viewing based on the left-right parallax formed by the left-eye image L and the right-eye image R.

Therefore, in the image generating apparatus to which the present invention is applied, the rotation angle about the z-axis, which is a direction perpendicular to the screen, is detected, and the left-eye image L and the right-eye image by adjusting either or both of the image of the image R, and to have a point of intersection between the line of sight of the sight and the right eye E _R of the left eye E _L of the observer, so that stereoscopic vision is possible .

2. Principle Configuration FIG. 3 shows an outline of the principle configuration of an image generating apparatus to which the present invention is applied.

The image generation device 20 includes an image generation unit 2
2. Includes an angle acquisition unit 24 and a display unit 26. Image generation unit 2
More specifically, 2 includes a left original image generation unit 28, a right original image generation unit 30, and a stereoscopic image generation unit 32. The stereoscopic image generation unit 32 includes a stereoscopic image adjustment unit 34.

The image generating unit 22 generates a stereoscopic image corresponding to the rotation angle about the z-axis acquired by the angle acquiring unit 24, and outputs it to the display unit 26.

More specifically, the image generation unit 22 determines the parallax between the left and right eyes of the viewer of the display unit 26 according to the rotation angle about the z-axis acquired by the angle acquisition unit 24. To generate a stereoscopic image. Therefore, the left original image generation unit 2
8 generates a left-eye image to be viewed with the left eye of the viewer on the display unit 26. Further, the right original image generation unit 30 generates a right-eye image to be viewed by the right eye of the viewer on the display unit 26. The stereoscopic image generation unit 32 is displayed on the display unit 26 based on the left-eye image generated by the left original image generation unit 28 and the right-eye original image generated by the right original image generation unit 30. Generate a stereoscopic image.

The stereoscopic image adjusting unit 34 includes the angle acquiring unit 24
The display position on the screen of at least one of the left-eye image and the right-eye image constituting the generated stereoscopic image and the viewpoint setting of the image according to the rotation angle acquired by By changing, the stereoscopic image is adjusted so that the line of sight of the left eye of the viewer viewing the image for the left eye and the line of sight of the right eye of the viewer watching the image for the right eye intersect.

The angle obtaining unit 24 obtains a rotation angle about the z-axis with respect to the reference position, and outputs the rotation angle to the image generating unit 22.
The angle acquisition unit 24 may not be included in the same housing as the display unit 26, but when included in the same housing, the display unit 26 displays the display unit 26 itself (or displays a stereoscopic image). It is possible to display a stereoscopic image according to the rotation angle of the screen to be displayed.

As shown in FIGS. 1A and 1B, the display unit 26 displays the stereoscopic image generated by the stereoscopic image generation unit 32 on the left eye of the viewer of the display unit 26. The image for the left eye generated by the original image generation unit 28 and the image for the right eye generated by the right original image generation unit 30 are displayed so as to be simultaneously visible to the right eye of the viewer.

That is, in the image generating apparatus 20, the stereoscopic image adjusting section 34 displays the left-eye image and the right-eye image display section 26 in accordance with the rotation angle about the z-axis acquired by the angle acquiring section 24. The display position on the screen and the viewpoint setting of the image are changed.

Thus, as described above, the viewer's left eye E
Each of _L and the right eye E _R and to have a point of intersection of the line of sight of the left eye and the right eye when gazing at the image L and the right eye image R for the left eye, to allow for stereoscopic vision. Therefore, for example, even when the screen of the portable image generation device rotates around the z-axis, the viewer who sees this screen remains in a stereoscopically viewable state.

3. First Embodiment FIGS. 4A, 4B, and 4C show diagrams for explaining the operation of a stereoscopic image adjustment unit according to the first embodiment.

The screen 40 of the display unit of the image generating apparatus according to the first embodiment displays a left-eye image L and a right-eye image R. Image L is for the left eye, has become visible only in the left eye E _L of the viewer of the screen 40, the image R is for the right eye, the screen 40
Only the right eye E _R of the viewer.

[0053] In the state shown in FIG. 4 (A), the line of sight of the left eye E _L of the observer of the screen 40, looks like the image at the intersection of the line of sight of the right eye E _R is present, enabling stereoscopic Become.

Here, as shown in FIG.
When the image is rotated counterclockwise about the z-axis, which is a direction perpendicular to the image, and becomes a state like the screen 42, the image L for the left eye and the image R for the right eye that constitute the stereoscopic image are displayed on the screen as they are. When displayed at 42, the line of sight of the left eye of the viewer looking at the image L for the left eye and the line of sight of the right eye of the viewer looking at the image R for the right eye do not cross. As a result, the viewer cannot perform stereoscopic vision.

Therefore, as shown in FIG. 4C, when the screen 40 is rotated around the z-axis from the state shown in FIG. At least one of the left-eye image L and the right-eye image R is shifted in the y-axis direction, which is the vertical direction of the screen 42, according to the angle.

By doing so, a state in which the line of sight of the left eye of the viewer viewing the image L for the left eye displayed on the screen 40 and the line of sight of the right eye of the viewer watching the image R for the right eye have an intersection. Can be maintained, and the state in which the viewer can view stereoscopically can be continued.

3.1 Game Apparatus 3.1.1 External Appearance FIG. 5 shows an external front view of a game apparatus to which the image generating apparatus according to the first embodiment is applied.

The game device according to the first embodiment (in a broad sense,
The image generation device 50 includes the image generation device having the configuration illustrated in FIG. 3, and further includes a screen 54, a left operation unit 56, and a right operation unit 58 arranged on the front side of a portable housing 52.

Here, for convenience of explanation, the horizontal direction of the screen 54 is the x axis, the vertical direction of the screen 54 is the y axis, and the direction perpendicular to the screen 54 (the direction perpendicular to the x axis and the y axis) is the z axis. .

The screen 54 includes an LCD on which the above-mentioned stereoscopic image is displayed, and displays an image for the left eye and an image for the right eye which constitute the stereoscopic image. The viewer sees the left-eye image with the left eye and the right-eye image with the right eye.

Each of the left operation unit 56 and the right operation unit 58 includes one or a plurality of push buttons. The left operation unit 56 and the right operation unit 58 are arranged so that the player can operate the left and right fingers of the player, for example, with the player holding the housing 52 with both hands.

This game device 50 determines the rotation angle around the z-axis shown in FIG. 5, and according to the determined rotation angle,
The display position on at least one of the left-eye image and the right-eye image displayed on the screen 54 is shifted.

3.1.2 Functional Block Configuration FIG. 6 shows an example of a functional block diagram of the game device of the first embodiment.

In the figure, in the first embodiment, at least the processing section 100, the display section 190, the angular velocity detecting section 1
98, and other blocks (for example, the operation unit 160, the sound output unit 192, and the portable information storage device 19).
4. The communication unit 196) can be an optional component.

Here, the processing section 100 controls the entire apparatus,
It performs various kinds of processing such as instruction of instructions to each block in the apparatus, game processing, image processing, and sound processing, and includes the function of the image generation unit 22 shown in FIG. (CPU, DSP, etc.) or ASIC
This can be realized by hardware such as a gate array or the like or a given program (game program).

The operation section 160 is used by the player to input operation data, and is operated by the left operation section 5 shown in FIG.
6, including the right operation unit 58, the function of which can be realized by hardware such as a lever, a button, and a microphone.

The main storage unit 170 serves as a work area for the processing unit 100, the communication unit 196, and the like.
And the like.

An information storage medium (a storage medium usable (executable) by a computer) 180 stores information such as programs and data, and its function is implemented by hardware such as a hard disk or a memory (ROM). realizable. The processing unit 100 includes the information storage medium 1
Various processes of the present invention (first embodiment) are performed based on the information stored in 80. That is, the information storage medium 180
Means (particularly, processing unit 1) of the present invention (first embodiment)
The information (program or data) for executing the block (00) is stored.

Note that part or all of the information stored in the information storage medium 180 is transferred to the main storage unit 170 when power is supplied to the apparatus. Information storage medium 18
0 includes a program for performing the processing of the present invention, image data, sound data, shape data of a display object, information for instructing the processing of the present invention, or information for performing the processing according to the instruction. Can be included.

The display section 190 outputs the image generated according to the first embodiment, and displays the screen 5 shown in FIG.
4 is capable of performing stereoscopic viewing by left and right parallax formed based on the left-eye image and the right-eye image.
D or the like.

The sound output section 192 outputs the sound generated according to the first embodiment, and its function can be realized by hardware such as a speaker.

The portable information storage device 194 stores personal data of a player, save data of a game, and the like. As the portable information storage device 194, a memory card or the like can be considered.

The communication unit 196 performs various controls for performing communication with the outside (for example, a host device or another game device). The communication unit 196 has various functions such as a processor or a communication ASIC. This can be realized by hardware, a program, or the like.

The angular velocity detector 198 detects a rotational angular velocity about the z-axis shown in FIG. 5 from the reference position.
This can be realized by hardware such as a gyro sensor. The detected rotational angular velocity is grasped as a rotational angle by an integral operation. Here, by employing a gyro sensor, it is possible to reduce the cost of the apparatus. However, for example, like the detection of an absolute angle by a magnetic sensor,
If the rotation angle around the z-axis shown in FIG. 5 from the reference position can be detected with an inexpensive configuration, the angle calculation unit may be omitted, including the angle acquisition unit instead of the angular velocity detection unit.

A program or data for executing the means of the present invention (first embodiment) is distributed from the information storage medium of the host device (server) to the information storage medium 180 via the network and the communication unit 196. You may make it. Use of the information storage medium of such a host device (server) is also included in the scope of the present invention.

The processing section 100 (processor) includes a game processing section 110, an image generation section 120, and an angle calculation section 130.

The game processing section 110 performs various mode setting processing, game progress processing, selection screen setting processing, the position of an object (one or a plurality of primitive surfaces) and the rotation angle (X, Y or Z axis) in the object space. Processing to determine the rotation angle), processing to move the object (motion processing), processing to determine the viewpoint position (virtual camera position) and line-of-sight angle (virtual camera rotation angle) in the object space, Various game processes such as a process of arranging in an object space, a hit check process, a process of calculating a game result (result, a result), a process for a plurality of players to play in a common game space, or a game over process, Operation data from the operation unit 160 and personal information from the portable information storage device 194 And chromatography data, and save data, performed on the basis of the game program and the like.

Here, the object space is, for example, a virtual three-dimensional space in which an object whose shape is specified by a defined point (such as a vertex of a polygon or a control point of a free-form surface) is arranged.

The virtual camera means the viewpoint in the object space described above.

In the first embodiment, the left-eye image and the right-eye image forming the stereoscopic image are a left-eye virtual camera C _L and a right-eye virtual camera C _L set in the object space. from _R, is generated as an object image viewed object arranged in the object space.

FIG. 7 schematically shows the left-eye virtual camera C _L and the right-eye virtual camera C _R whose viewpoint has been set in the object space by the game processing section.

In the image generating section 22, as shown in FIG.
An object space, which is a virtual three-dimensional space specified by X, Y, and Z coordinate axes orthogonal to each other, is defined. At a given coordinate in this object space, an object OB shown in FIG. 7 defined on local coordinates is located. This object OB is composed of, for example, one or a plurality of polygons.

In the object space, the object OB
, A left-eye virtual camera C _L for generating a left-eye image and a virtual camera C _R for generating a right-eye image are set so as to have a given parallax. For the left-eye virtual camera C _L , an x _L axis, a y _L axis, and a z _L axis are defined as a camera coordinate system. The right-eye virtual camera C _R, x _R-axis as a camera coordinate system, y _R-axis, z _R axis is defined.

[0084] Left-eye image, as the viewpoint of the virtual camera C _L for the left eye, are generated as the object image of an object OB disposed on the object space. Image for the right eye, as the viewpoint of the virtual camera C _R for the right eye is generated as an object image of an object OB disposed on the object space.

In the first embodiment, the left-eye virtual camera C for generating such a left-eye image and a right-eye image is used.
_L, right eye viewpoint setting of the virtual camera C _R, the virtual camera C _L for the left eye in accordance with the rotation angle of the z-axis of the screen ', the right-eye virtual camera C _R' by changing the, viewer To maintain a stereoscopic view. The generation of the left-eye image and the right-eye image accompanying the change of the viewpoint setting is performed by the image generation unit 120.

[0086] The image generation section 120 is provided with a game processing section 110.
Performs various types of image processing in accordance with instructions and the like, and generates a left-eye image and a right-eye image that can be viewed from the left-eye and right-eye virtual cameras (viewpoints) in the object space as described above. Is output to the display unit 190. At this time, based on the rotation angles calculated by the angle calculation unit 130, for example, virtual cameras (viewpoints) for the left eye and the right eye are set in the object space, and the left-eye image and the right-eye image seen from these are set. Generate an image.

The angle calculation section 130 has an angular velocity detection section 198
The rotation angle from the reference position is calculated and obtained based on the rotation angular velocity of the game device around the z-axis shown in FIG. More specifically, the angle calculation unit 130 performs an integration operation on the rotation angular velocity detected by the angular velocity detection unit 198 to obtain a rotation angle. This rotation angle is used by the image generation unit 120 to change the left-eye image and the right-eye image that constitute the stereoscopic image.

Further, the processing section 100 performs various kinds of sound processing based on the result of the game processing, and performs BGM, sound effects,
Alternatively, a sound such as a voice is generated and output to the sound output unit 192.

The functions of the processing section 100 may be entirely realized by hardware, or may be entirely realized by a program. Alternatively, it may be realized by both hardware and a program.

The image generation unit 120 includes the geometry processing unit 1
22, a drawing (rendering) unit 124 and a stereoscopic image processing unit 126.

The geometry processing unit 122 performs various types of geometry processing (three-dimensional operation) such as coordinate transformation, clipping processing, perspective transformation, and light source calculation. In the first embodiment, the positions of the left-eye and right-eye virtual cameras in the object space are set according to the rotation angles obtained by the angle calculation unit 130, and the set left-eye and right-eye virtual cameras are set. The above-described geometry processing is performed using the virtual cameras for the eyes as viewpoints, and object data (vertex coordinates, vertex texture coordinates, luminance data, and the like of the object) after two types of geometry processing (after perspective transformation) are performed in the same frame. It is stored in the main storage unit 170.

The drawing unit 124 draws an object in the frame buffer based on the object data after the geometry processing (after the perspective transformation) and the given texture for each of the left-eye image and the right-eye image. Thereby, in the object space in which the object moves, images viewed from the left-eye and right-eye virtual cameras (viewpoints) are drawn (generated).

The stereoscopic image processing section 126 has the function of the stereoscopic image generating section 32 including the stereoscopic image adjusting section 34 shown in FIG. In other words, the stereoscopic image processing unit 126 outputs a stereoscopic image to the LCD of the display unit 190 from the left-eye image and the right-eye image, which are object images generated from the left-eye and right-eye virtual cameras described above. Generate stereoscopic image information for displaying an image.

The game apparatus according to the present embodiment may be a system dedicated to the single player mode in which only one player can play, or a multiplayer in which a plurality of players can play in addition to the single player mode. A system having a player mode may be used.

When a plurality of players play,
The game image and the game sound to be provided to the plurality of players may be generated using one terminal, or may be generated using a plurality of terminals connected by a network (transmission line, communication line) or the like. Is also good.

3.1.3 Obtaining Rotation Angle In the game device according to the first embodiment, the angular velocity detection unit 1
The display position on at least one of the left-eye image and the right-eye image constituting the stereoscopic image can be changed in accordance with the rotation angle based on the rotation angular velocity detected by 98.

For this reason, the game device according to the first embodiment is provided with a gyro sensor as the angular velocity detector 198, and detects the rotational angular velocity ωz about the z-axis shown in FIG. The rotation angle θz about the z-axis of the game device is obtained by integrating the rotation angular velocity ωz.

By the way, the gyro sensor as the angular velocity detector 198, which can be generally applied to a portable game device, has a low detection accuracy. That is, at present, the detection accuracy of a gyro sensor that achieves both reduction in size and weight and low cost is low.

FIG. 8 shows a change in the rotational angular velocity ωz detected by such a gyro sensor with a low detection accuracy and the rotational angle θz generated thereby.

With the passage of time, the housing 52 shown in FIG.
When rotated about the axis, the gyro sensor as the angular velocity detecting section 198 detects the rotational angular velocity ωz. For example, when the rotation is stopped at a certain time t1, a small minute rotation angular velocity ωz due to the detection accuracy of the gyro sensor may be detected even though the rotation angular velocity ωz should originally be 0.

As described above, the rotation angle θz is obtained by integrating the rotation angular velocity ωz.
Although the rotation angle ωz should be a fixed value as described above, the minute rotation angular velocity ωz is integrated, and the rotation angle gradually changes like A2.

Therefore, if the display position of the left-eye image or the right-eye image on the screen is changed based on the rotation angle θz, the viewer rotates the housing 52 around the z-axis. Despite this, the arrangement of the display positions of the left-eye image or the right-eye image displayed on the screen gradually changes. As a result, a viewer who was initially capable of stereoscopic vision may gradually become unable to perform stereoscopic vision.

Therefore, the angle calculation unit 130 of the game device according to the first embodiment always slowly changes the value of the rotation angle θz obtained by integrating the rotation angular velocity ωz detected by the angular velocity detection unit 198 with time. , A gyro sensor with low detection accuracy is applied as the angular velocity detection unit 198 without depending on the detection accuracy of the gyro sensor. It is possible to increase fun.

FIG. 9 shows a rotational angular velocity ωz detected by a gyro sensor having a low detection accuracy, and a first angular velocity ωz based on the rotational angular velocity ωz.
11 shows a change in the rotation angle θz calculated by the angle calculation unit 130 in the embodiment.

With the passage of time, the housing 52 shown in FIG.
When rotated about the axis, the gyro sensor as the angular velocity detecting section 198 detects the rotational angular velocity ωz. For example, when the rotation is stopped at a certain time t1, a small minute rotation angular velocity ωz due to the detection accuracy of the gyro sensor may be detected even though the rotation angular velocity ωz should originally be 0.

However, in the first embodiment, since the rotation angle θz is always slowly approached to 0, the rotation angle θz obtained by integrating the rotation angular velocity ωz is
After time t1, it does not become like A1, but changes like B1.

For example, with respect to the obtained rotation angle θz, the rotation angle θz is made closer to 0 according to a given function f as shown in equation (3).

Θz = f (θz) (3) Further, as shown in equation (4), the absolute value of the rotation angle θz may approach 0 by multiplying by a constant less than 1.

Θz = β · θz (0 <β <1, β is a constant) (4) As described above, the gyro sensor as the angular velocity detection unit 198 is obtained by setting the rotation angle θz close to 0. Can be prevented from gradually deviating from the correct value due to the error of.

In the game device according to the first embodiment, the angle calculation unit 130 is thus provided at a given frame cycle.
According to the rotation angle θz about the z axis obtained by the above, the virtual camera for the left eye and the virtual camera for the right eye in the object space are set in the image generation unit 120, and after the geometry processing in the geometry processing unit 122, the drawing unit 124
Generates an object image based on this.

The image for the left eye and the image for the right eye thus generated are processed by the stereoscopic image processing unit 126 as shown in FIG.
A stereoscopic image as shown in (A) and (B) is generated.

3.1.4 Obtaining Rotation Angle Around Z-Axis In the first embodiment, the rotation angle about the z-axis, which is a direction perpendicular to the screen, is obtained, and as shown in FIG. At least one of the left-eye image L and the right-eye image R, which constitute a stereoscopic image according to the rotation angle, is displaced in the display position on the screen in the up-down direction (y-axis direction). who have to have a point of intersection between the line of sight of the sight and the right eye E _R of the left eye E _L, so that stereoscopic vision is possible.

More specifically, in the first embodiment, the image L for the left eye and the image R for the right eye in the object space
The position of the left-eye virtual camera C _L and the right-eye virtual camera C _R for generating a is set to a position corresponding to the rotation angle of the z axis. Accordingly, the stereoscopic image generated by these virtual cameras, it is possible to have the intersection of the line of sight of the sight line and the right eye E _R of the left eye E _L of the observer of the stereoscopic image displayed, the three-dimensional by a viewer It is made possible to see.

FIGS. 10A and 10B show an example of a rotation angle around the z-axis acquired for performing such a stereoscopic image adjustment.

When the screen 54 is in the state of the screen 250 by rotating the housing 52 around the z-axis, the angular velocity detecting unit 1
The rotation angle θz about the z-axis at the center point of the screen 54 is obtained by the 98 and the angle calculation unit 130.

The rotation angle θz about the z-axis is obtained by integrating the rotation angle speed ωz detected by the angular speed detection unit 198 by the angle calculation unit 130 as shown in FIG. 0).

[0117] Then, the processing unit 100, in accordance with the rotation angle [theta] z, the virtual camera C _L for the left eye in object space when the screen 54, the position of the virtual camera C _R for the right eye, and FIG. 10 (B) As shown in (5), the positions of the left-eye virtual camera C _L ′ and the right-eye virtual camera C _R ′ are changed in the object space represented by the equations (5) and (6).

[0118] the left-eye virtual camera C _L: - the position of the 'position of (D / 2 · cos θz, D / 2 · sin θz, z0) ··· (5) the virtual camera for the right eye C _R' :( D / 2 · cos θz, −D / 2 · sin θz, z0) (6) As a result, the left-eye virtual camera C _L ′ has the configuration shown in FIG.
The camera coordinate system is defined by the x _L ′ axis, y _L ′ axis, and z _L ′ axis (not shown) shown in FIG. Similarly, the virtual camera C _R ′ for the right eye has the x _R ′ axis, y _R ′ axis, and z _R ′ shown in FIG.
The camera coordinate system is defined by the 'axis (not shown).

Therefore, the right-eye image R displayed on the screen 254 is moved upward in the screen 254 as shown in FIG. 4C, and the left-eye image L is moved downward in the screen 254. Can be. Accordingly, the left-eye image L and the right-eye image R are displayed on the screen 254 so as to be parallel to the direction in which the viewer's eyes are arranged. The line of sight intersects the line of sight of the right eye of the viewer who views the right-eye image R. That is, even when rotating the housing 52 around the z-axis has an intersection and the line of sight of the sight and the right eye E _R of the left eye E _L of the observer of the stereoscopic image having a left and right parallax, it can stereoscopic Becomes

3.1.5 Processing Example Next, a detailed example of the processing of the above-described first embodiment will be described with reference to a flowchart.

FIG. 11 shows an example of processing for generating a stereoscopic image according to the rotation angle θz about the z-axis in the first embodiment.

First, the processing unit 100 includes the angular velocity detecting unit 19
The rotation angular velocity ωz about the z-axis detected by 8 is extracted, and the angle calculation unit 130 performs an integration operation to obtain a rotation angle θz about the z-axis (step S10).

Next, the positions of the left-eye and right-eye virtual cameras in the object space are set according to the rotation angle θz (step S11). That is, the positions of the left-eye and right-eye virtual cameras are set to the coordinates shown in Expressions (5) and (6).

The geometry processing unit 122 and the drawing unit 124 generate images from the positions of the left-eye and right-eye virtual cameras in the object space set in step S11 (step S12).

Subsequently, the stereoscopic image processing unit 126
The image is displayed on the screen of the display unit 190 as a stereoscopically viewable image as shown in FIG. 4C (step S13).

Then, it is determined whether or not a given end operation has been performed (step S14). If it is determined that there has been no end operation (step S14: N), the process returns to step S10.

On the other hand, when it is determined that a given end operation has been performed (step S14: Y), a series of processing ends (end).

As described above, according to the first embodiment, a stereoscopic image that can be stereoscopically viewed by parallax in the left-right direction is converted into a left-eye image and a right-eye image according to the rotation angle of the screen of the display unit about the z-axis. Since the display position of at least one of the images for the eye is changed in the vertical direction on the screen, the line of sight of the left eye of the viewer viewing the image for the left eye and the right eye of the viewer watching the image for the right eye Can have an intersection with the line of sight of the user, so that stereoscopic vision is not difficult.

In the first embodiment, the positions of the left-eye virtual camera C _L and the right-eye virtual camera C _R for generating the left-eye image L and the right-eye image R in the object space are changed. The display position of one or both of the image L for the left eye and the image R for the right eye in the vertical direction of the screen 250 simply in accordance with the rotation angle around the z-axis is shown in FIG. May be changed as shown in FIG.

For example, the image L for the left eye or the image R for the right eye may be a pseudo two-dimensional image imitating a three-dimensional image. In this case, it is possible to reduce the processing cost of generating a stereoscopic image.

Further, in the first embodiment, the left-eye image L and the right-eye image R constituting the stereoscopic image are shifted so as to be parallel to the direction in which the viewer's eyes are arranged. It is not limited to this. For example, assuming that the direction of the arrangement of the eyes of the viewer is generally horizontal, at least one of the image L for the left eye and the image R for the right eye is shifted, and the image L for the left eye and the image for the right eye are shifted. The arrangement of the display positions of the images R on the screen may be horizontal.

[0132] 4. Second Embodiment In the first embodiment, when the housing 52 is rotated about the z-axis, the viewpoint setting of the virtual camera in the object space is changed, so that the left-eye image L displayed on the screen 54 is changed. In addition, each display position of the right-eye image R is changed. Therefore, the display position on the screen 54 of the stereoscopic image watched by the viewer moves (at least in the y-axis direction).
Since the line of sight of the right eye of the viewer viewing the image for the right eye can have an intersection, stereoscopic viewing has been possible.

On the other hand, in the second embodiment, when the screen is rotated around the z-axis, the displayed left-eye image L and right-eye image R are always fixed to the viewer. By setting the viewpoint to, it is possible to maintain a state in which the line of sight of the left eye that sees only the image for the left eye and the line of sight of the right eye that sees only the image for the right eye have an intersection, and enables stereoscopic vision It is characterized by:

FIGS. 12A and 12B are diagrams for explaining the operation of the stereoscopic image adjusting unit according to the second embodiment.

The screen 270 of the display unit of the image generating apparatus according to the second embodiment displays a left-eye image L and a right-eye image R. The image L for the left eye is the left eye E _L of the viewer on the screen 270.
, And the image R for the right eye can be seen only by the right eye E _R of the viewer on the screen 270.

In this state, the left eye E of the viewer on the screen 270 is displayed.
_L and the line of sight, seem image at the intersection of the line of sight of the right eye E _R is present, it is possible to stereoscopically.

Here, as shown in FIG.
When the image is rotated counterclockwise about the z-axis, which is a direction perpendicular to 70, and becomes a state like the screen 272, the virtual camera C _L for generating the image L for the left eye, the viewpoint setting of the virtual camera C _R for generating the image R, is rotated at the virtual camera coordinate system in accordance with the obtained z axis rotation angle [theta] z. Accordingly, the left-eye image L and the right-eye image R displayed on the screen 272 can display a stereoscopic image without changing the direction to the viewer. As a result, since the line of sight of the left eye of the viewer viewing the image for the left eye and the line of sight of the right eye of the viewer watching the image for the right eye can have an intersection, even when the screen 270 is rotated,
The viewer can view stereoscopically.

FIG. 13 schematically shows a state in which the viewpoints of the left-eye and right-eye virtual cameras are set in the object space in the second embodiment.

As shown in FIG. 13, the image generation unit 22 defines an object space which is a virtual three-dimensional space specified by coordinate axes of X, Y, and Z axes orthogonal to each other. At given coordinates in this object space, the object O shown in FIG.
B is located. This object OB is, for example, 1
Or, it is composed of a plurality of polygons.

In the object space, the object OB
, A left-eye virtual camera C _L for generating a left-eye image and a virtual camera C _R for generating a right-eye image are set so as to have a given parallax. For the left-eye virtual camera C _L , an x _L axis, a y _L axis, and a z _L axis are defined as a camera coordinate system. The right-eye virtual camera C _R, x _R-axis as a camera coordinate system, y _R-axis, z _R axis is defined.

[0141] Left-eye image, as the viewpoint of the virtual camera C _L for the left eye, are generated as the object image of an object OB disposed on the object space. Image for the right eye, as the viewpoint of the virtual camera C _R for the right eye is generated as an object image of an object OB disposed on the object space.

In the second embodiment, a left-eye virtual camera C for generating such a left-eye image and a right-eye image is used.
_L, right eye viewpoint setting of the virtual camera C _R, the virtual camera C _L for the left eye in accordance with the rotation angle of the z-axis of the screen ', the right-eye virtual camera C _R' Changing the viewpoint set , So that the viewer can keep a stereoscopic view.

More specifically, the image generation unit determines the z
The positions and angles of the left-eye and right-eye virtual cameras C _L and C _R are set according to the rotation angles about the axis. The left-eye and right-eye virtual cameras C _L ′ and C _R for which such a viewpoint setting has been performed.
′ Are local to the virtual camera coordinate system (x _L ′,
_{y L ', z L')} , and a _{(x R ', y R'} , z R ').

The image generation unit generates an image of the object OB viewed from the left-eye and right-eye virtual cameras C _L ′ and C _R ′ set in this way, and sets the left-eye image L and the left-eye image L, respectively.
The image is displayed on the screen of the display unit as the right eye image R.

FIGS. 14A and 14B show an example of a rotation angle about the z-axis acquired for performing stereoscopic image adjustment in the second embodiment.

When the screen 270 is in the state of the screen 272 by rotating the casing around the z-axis, the angular velocity detecting unit and the angle calculating unit detect the z in the direction perpendicular to the screen 270.
Obtain the rotation angle θz about the axis.

As in the first embodiment, the rotation angle θz about the z-axis is obtained by integrating the rotation angle speed ωz detected by the angular speed detection unit by the angle calculation unit, and further always giving a given value (for example, 0).

Then, the directions of the left-eye virtual camera C _L and right-eye virtual camera C _{R in} the object space are changed as shown in FIG. 14B according to the rotation angle θz.

As a result, the left-eye image L and the right-eye image R displayed on the screen 272 are displayed side by side in the horizontal direction as shown in FIG. As a result, the left-eye image L and the right-eye image R displayed on the screen 272 can be viewed from the left-eye line of sight of the viewer viewing the left-eye image L and the right-eye image The state in which the line of sight of the right eye of the viewer who views the image R intersects is maintained.

In the second embodiment, the z of the acquired screen is
The left-eye virtual camera and the right-eye virtual camera are rotated in each virtual camera coordinate system according to the rotation angle θz about the axis. More specifically, in the coordinate system of the virtual camera C _L , the virtual camera C _L is rotated by the obtained rotation angle around the z _L axis associated with the z axis of the screen. Also, the virtual camera C _R
In the coordinate system, the z _R axis to be associated with the z-axis of the screen, is rotated by the rotation angle of the acquired z-axis.

FIGS. 15A and 15B show an example of a stereoscopic image when each virtual camera is rotated in the virtual camera coordinate system according to the acquired rotation angle θz about the z-axis.

That is, when the image from each virtual camera is displayed on the screen 272, the position and the orientation of the image do not change with respect to the viewer. Accordingly, as shown in FIG. 15 (B), the line of sight connecting the gazing point and the left eye E _L, is an image that feels like at the intersection 282 between the visual axis connecting the gazing point and the right eye E _R observation Will be done.

The image generating device according to the second embodiment can be applied to a game device as in the first embodiment. Since the configuration and operation are the same as those of the first embodiment shown in FIGS. 5 to 8, illustration and description thereof are omitted.

The difference between the second embodiment and the first embodiment is that the operation of the stereoscopic image adjustment unit is different.

4.1 Processing Example FIG. 16 shows an example of processing for generating a stereoscopic image according to the rotation angle θz about the z-axis in the second embodiment.

First, the processing section takes out the rotational angular velocity ωz about the z-axis detected by the angular velocity detecting section, performs an integral operation in the angle generating section, and obtains the rotational angle θz about the z-axis.
Is obtained (step S20).

Next, the left-eye virtual camera and the right-eye virtual camera set in the object space are acquired around the z _L axis and z _R axis respectively associated with the z axis in each virtual camera coordinate system. The viewpoint is set by rotating by the rotation angle θz in the direction opposite to the rotation direction of the rotation angle (step S21).

The geometry processing unit and the drawing unit generate images from the positions of the left-eye and right-eye virtual cameras in the object space set in step S21 (step S22).

Subsequently, the stereoscopic image processing unit shown in FIG.
The image is displayed on the screen of the display unit as a stereoscopic image that can be stereoscopically displayed as shown in (A) (step S23).

Then, it is determined whether or not a given end operation has been performed (step S24). When it is determined that no end operation has been performed (step S24: N), the process returns to step S20.

On the other hand, when it is determined that a given end operation has been performed (step S24: Y), a series of processing ends (end).

As described above, according to the second embodiment, when the screen on which the stereoscopic image is displayed is rotated around the z-axis,
The left-eye virtual camera and the right-eye virtual camera are rotated around the z-axis of each virtual camera coordinate system according to the obtained rotation angle. Thereby, the image L for the left eye and the image R for the right eye displayed on the screen can be fixed to the viewer, so that the line of sight of the left eye of the viewer who sees the image for the left eye and the image for the right eye The line of sight of the right eye of the viewer who views the image can be made to intersect, and stereoscopic viewing can be made possible.

Also, in this case, even if the player of the game apparatus operates the camera by tilting the housing due to the strength of the finger operated by the player, if a position allowing stereoscopic viewing is set in advance, the position can be adjusted. Normal stereoscopic vision can be maintained even if the screen is tilted depending on the operation condition.

The means of the present invention may be entirely executed by hardware only, or executed only by a program stored in an information storage medium or a program distributed via a communication interface. Is also good. Alternatively, it may be executed by both hardware and a program.

The present invention is not limited to those described in the above embodiments, and various modifications can be made.

In the first and second embodiments, the rotation angle θz about the z axis to be obtained is described as being obtained with reference to the center position of the screen. However, the present invention is not limited to this. In short, it is sufficient that the rotation angle θz around the z-axis or the rotation angle corresponding thereto can be acquired based on a predetermined position on the screen.

Furthermore, in the first and second embodiments, a description has been given assuming that a three-dimensional image in the object space is generated. However, the present invention is not limited to this. As a left-eye image and a right-eye image, it is a pseudo two-dimensional image imitating a three-dimensional image, without real-time processing,
A plurality of images prepared in advance may be switched.

Further, as the display unit of the first and second embodiments, a display apparatus using a parallax barrier method, a lenticular method, a liquid crystal shutter, or polarized glasses as a display method of a stereoscopic image is applied. Can be.

In the first and second embodiments, the game device has been described. However, the present invention is not limited to this. For example, the present invention can be similarly applied to a mobile phone and a PDA.

[Brief description of the drawings]

FIGS. 1A and 1B are explanatory diagrams illustrating an example of a stereoscopic image generated by an image generating apparatus. FIGS.

FIGS. 2A and 2B are explanatory diagrams illustrating an example of a stereoscopic image displayed on a screen when rotated about a z-axis. FIGS.

FIG. 3 is a configuration diagram illustrating an outline of a principle configuration of an image generation apparatus to which the present invention is applied;

FIGS. 4A, 4B, and 4C are explanatory diagrams for explaining the operation of a stereoscopic image adjustment unit according to the first embodiment.

FIG. 5 is an external front view of a game device to which the image generation device according to the first embodiment is applied.

FIG. 6 is a functional block diagram illustrating an example of the game device according to the first embodiment.

FIG. 7 is a schematic diagram schematically showing a state where a viewpoint is set for a left-eye virtual camera and a right-eye virtual camera in an object space.

FIG. 8 is an explanatory diagram showing a rotational angular velocity detected by a gyro sensor having low detection accuracy and a change in a rotational angle generated by the rotational angular velocity.

FIG. 9 is an explanatory diagram showing a rotational angular velocity detected by a gyro sensor with low detection accuracy and a change in the rotational angle calculated by the angle calculator in the first embodiment based on the rotational angular velocity.

FIGS. 10A and 10B are explanatory diagrams illustrating an example of a rotation angle around the z-axis acquired for performing stereoscopic image adjustment in the first embodiment.

FIG. 11 is a flowchart illustrating an example of a process of generating a stereoscopic image according to a rotation angle around the z-axis according to the first embodiment.

FIGS. 12A and 12B are explanatory diagrams for describing an operation of a stereoscopic image adjustment unit according to the second embodiment.

FIG. 13 is a schematic diagram schematically illustrating a state where a viewpoint is set for a left-eye virtual camera and a right-eye virtual camera in an object space according to the second embodiment.

FIGS. 14A and 14B are explanatory diagrams illustrating an example of a rotation angle around the z-axis acquired for performing stereoscopic image adjustment in the second embodiment.

FIGS. 15A and 15B are explanatory diagrams illustrating an example of a stereoscopic image when each virtual camera is rotated in a virtual camera coordinate system according to an acquired rotation angle around the z-axis. It is.

FIG. 16 is a flowchart illustrating an example of a process of generating a stereoscopic image according to a rotation angle around the z-axis according to the second embodiment.

[Explanation of symbols]

10, 40, 42, 54, 250, 270, 272 Screen 20 Image generation device 22, 120 Image generation unit 24 Angle acquisition unit 26, 190 Display unit 28 Left original image generation unit 30 Right original image generation unit 32 Stereoscopic image generation Unit 34 stereoscopic image adjustment unit 50 game device 52 housing 56 left operation unit 58 right operation unit 100 processing unit 110 game processing unit 122 geometry processing unit 124 drawing unit 126 stereoscopic image processing unit 130 angle calculation unit 160 operation unit 170 main Storage unit 180 Information storage medium 192 Sound output unit 194 Portable information storage device 196 Communication unit 198 Angular velocity detection unit 280 Object C _L Virtual camera for left eye C _R Virtual camera for right eye E _L Left eye E _R Right eye L Left eye Image R image for right eye θz rotation angle ωz rotation angular velocity

Continued on the front page F-term (reference) 2C001 AA03 AA06 AA09 AA10 BA01 BA03 BA06 BC01 BC03 BC06 BC08 CB01 CB02 CB03 CC02 CC03 DA04 5B050 AA09 BA09 EA13 FA02 FA06 5C061 AA01 AA21 AB14 5C082 AA06 AA87 CA52 CA47

Claims (13)

[Claims] 1. An image generating apparatus for generating an image, comprising: display means for displaying a stereoscopic image by a left-right parallax formed based on a left-eye image and a right-eye image; and a screen of the display means Angle acquisition means for acquiring a rotation angle about the first axis of the screen when a direction perpendicular to the first axis is used as the first axis. According to the acquired rotation angle, the image for left eye and An image adjustment unit that shifts a display position of at least one of the right-eye images on the screen in a vertical direction. 2. The image adjustment device according to claim 1, wherein the display position of the left-eye image and the right-eye image on the screen is arranged according to the acquired rotation angle. An image generation apparatus, wherein a display position of at least one of the left-eye image and the right-eye image on the screen is shifted so as to be parallel to an eye arrangement direction. 3. The virtual camera setting means according to claim 1, wherein a viewpoint setting of a left-eye virtual camera and a right-eye virtual camera in an object space is performed according to the acquired rotation angle; And means for generating an image for the left eye and an image for the right eye with the virtual camera for the right eye as a viewpoint. 4. An image generating apparatus for generating an image, comprising: display means for displaying a stereoscopic image based on left and right parallax formed based on a left-eye image and a right-eye image; and a screen of the display means Angle acquisition means for acquiring a rotation angle about the first axis of the screen when a direction perpendicular to the first axis is set as a first axis; and a left eye in an object space according to the acquired rotation angle. Virtual camera setting means for setting the viewpoint of the virtual camera for and for the right eye, and means for generating an image for the left eye and an image for the right eye from the viewpoint of the virtual camera for the left eye and the virtual camera for the right eye, The virtual camera setting means, according to the acquired rotation angle, the viewpoints of the left-eye and right-eye virtual cameras, the coordinate system of each virtual camera associated with the first axis Characterized in that the image is rotated around a coordinate axis. Generating device. 5. The angle acquisition unit according to claim 1, wherein the angle acquisition unit acquires the rotation angle based on a rotation angular velocity detected by an angular velocity detection unit that detects a rotation angular velocity about the first axis. An image generating apparatus, comprising: 6. The image generating apparatus according to claim 1, further comprising: a unit configured to make the obtained rotation angle approach a given value over time. 7. A program usable by a computer, comprising: a direction perpendicular to a screen of a display means for displaying a stereoscopic image by a left-right parallax formed based on a left-eye image and a right-eye image. Is a first axis, an angle acquisition unit that acquires a rotation angle of the screen about the first axis, and an image of the left-eye image and the right-eye image according to the acquired rotation angle. A program for causing a computer to realize: image adjustment means for shifting a display position on at least one of the screens in a vertical direction. 8. The image adjustment device according to claim 7, wherein the display positions of the left-eye image and the right-eye image on the screen are arranged according to the acquired rotation angle. A program for shifting a display position of at least one of the left-eye image and the right-eye image on the screen so as to be parallel to an eye arrangement direction. 9. The virtual camera setting unit according to claim 7, wherein a virtual camera setting unit configured to set a viewpoint of a left-eye virtual camera and a right-eye virtual camera in an object space according to the acquired rotation angle. And means for generating a left-eye image and a right-eye image using the right-eye virtual camera as a viewpoint, and a computer-implemented program. 10. A program usable by a computer, comprising: a direction perpendicular to a screen of a display means for displaying a stereoscopic image by a left-right parallax formed based on a left-eye image and a right-eye image. Is a first axis, an angle acquisition unit that acquires a rotation angle around the first axis, and a virtual camera for the left eye and a virtual camera for the right eye in the object space according to the acquired rotation angle. A virtual camera setting unit configured to perform a viewpoint setting; and a unit configured to generate a left-eye image and a right-eye image using the left-eye virtual camera and the right-eye virtual camera as viewpoints. The setting unit rotates the viewpoints of the left-eye and right-eye virtual cameras around coordinate axes in the coordinate system of each virtual camera associated with the first axis according to the acquired rotation angle. Characterized by Program. 11. The angle acquisition unit according to claim 7, wherein the angle acquisition unit acquires the rotation angle based on a rotation angular speed detected by an angular speed detection unit that detects a rotation angular speed around the first axis. A program characterized by the following. 12. The non-transitory computer-readable storage medium according to claim 7, wherein the computer is configured to implement means for bringing the acquired rotation angle closer to a given value as time passes. 13. An information storage medium usable by a computer, wherein the information storage medium includes the program according to claim 7. Description: